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Finding the Fourth Proportional to 117,161.69, 161,682.33 and 63,445.48

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Solution

The fourth proportional to 117,161.69, 161,682.33 and 63,445.48 is: 87,554.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,161.69 : 161,682.33 = 63,445.48 : x
  2. Step 2: Convert to fraction form
    117,161.69/161,682.33 = 63,445.48/x
  3. Step 3: Cross multiply
    117,161.69x = 161,682.33 × 63,445.48
  4. Step 4: Simplify right side
    117,161.69x = 10,258,012,511.20
  5. Step 5: Solve for x
    x = 10,258,012,511.20/117,161.69
  6. Step 6: Final answer
    x = 87,554.32

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.